142902549 has 10 divisors (see below), whose sum is σ = 213471830. Its totient is φ = 95268312.

The previous prime is 142902521. The next prime is 142902563. The reversal of 142902549 is 945209241.

It can be written as a sum of positive squares in only one way, i.e., 77000625 + 65901924 = 8775^2 + 8118^2 .

It is not a de Polignac number, because 142902549 - 2⁹ = 142902037 is a prime.

It is a super-2 number, since 2×142902549² = 40842277021394802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142902449) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 882034 + ... + 882195.

It is an arithmetic number, because the mean of its divisors is an integer number (21347183).

Almost surely, 2^142902549 is an apocalyptic number.

It is an amenable number.

142902549 is a deficient number, since it is larger than the sum of its proper divisors (70569281).

142902549 is an equidigital number, since it uses as much as digits as its factorization.

142902549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764241 (or 1764232 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 142902549 is about 11954.1854176686. The cubic root of 142902549 is about 522.8133376938.

The spelling of 142902549 in words is "one hundred forty-two million, nine hundred two thousand, five hundred forty-nine".